*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: ui-sans-serif, system-ui, sans-serif;
  background-color: #000000;
  color: #f8f9fa;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing__brand {
  position: fixed;
  top: 1.25rem;
  left: 1.25rem;
  z-index: 10;
  line-height: 0;
  border-radius: 0.5rem;
}

.landing__brand img {
  display: block;
  height: clamp(2.5rem, 7vw, 3.35rem);
  width: auto;
  max-width: min(168px, 44vw);
  object-fit: contain;
  transition: filter 0.25s ease;
  filter: drop-shadow(0 10px 22px rgba(168, 85, 247, 0.4))
    drop-shadow(0 4px 14px rgba(168, 85, 247, 0.28));
}

.landing__brand:hover img {
  filter: drop-shadow(0 14px 28px rgba(168, 85, 247, 0.55))
    drop-shadow(0 0 18px rgba(168, 85, 247, 0.75))
    drop-shadow(0 0 36px rgba(168, 85, 247, 0.4));
}

.landing {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem;
  text-align: center;
}

.landing__slogan {
  margin: 0;
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: rgba(248, 249, 250, 0.92);
}

.landing__cta {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border: none;
  border-radius: 9999px;
  cursor: pointer;
  color: #ffffff;
  background-color: #005bbf;
  box-shadow:
    0 4px 24px rgba(0, 91, 191, 0.35),
    0 0 32px rgba(168, 85, 247, 0.22),
    0 0 56px rgba(168, 85, 247, 0.12);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.landing__cta:hover {
  background-color: #1a73e8;
  box-shadow:
    0 6px 28px rgba(26, 115, 232, 0.4),
    0 0 40px rgba(168, 85, 247, 0.32),
    0 0 72px rgba(168, 85, 247, 0.18);
  transform: translateY(-1px);
}

.landing__cta:active {
  transform: translateY(0);
}

.landing__error {
  margin: 0;
  max-width: 28rem;
  font-size: 0.9375rem;
  line-height: 1.45;
  color: #fca5a5;
}

.landing__cta:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}